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  1. JDK
  2. JDK-8048248

[Backed out] G1 Class Unloading after completing a concurrent mark cycle

    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P2
    • Resolution: Fixed
    • Affects Version/s: 9
    • Fix Version/s: 9
    • Component/s: hotspot
    • Subcomponent:
      gc
    • Resolved In Build:
      b24

      Backports

        Description

        [This bug was backed out and pushed as JDK-8049421 instead]

        Currently G1 treats all classes as live except for during full gcs.

        Modify the concurrent marking code to keep track of liveness of classes in order to be able to unload unreachable classes at the remark pause.
        This involves reusing the infrastructure used by CMS to follow the object headers to find live classes.

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                • Assignee:
                  stefank Stefan Karlsson
                  Reporter:
                  mgerdin Mikael Gerdin (Inactive)
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                  • Created:
                    Updated:
                    Resolved: